Level on sloped campsites. How? Unique to 5er's

"What about backing the trailer up so the steps..."

Trailer is backed up as far as it can go. There is another campsite behind us and actually, our back end is already encroaching on his site.

Also, if I backed up any further, the rear jacks would be in grass, not over gravel, and there is a bumper block at the end of the gravel.

Moving is not the option. I need to figure out how to handle this situation, not just right now, but for future experiences also.